I think it is normal to move the engine forward about 2". It may have something to do with the Diehl skins being a bit heavier than the stock wings, or just that almost, if not all, KRs are being built much heavier than the design weights published.
I believe that Jim Faughn had his 2180 forward 2" and think that he had stock wings. See N64KR at http://KRBuilder.org - Then click on the pics? Peoples Choice at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best KR at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best Interior at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best Paint at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Best Firwwall Forward at 2013 - KR Gathering in Mt. Vernon, Il ? MVN Daniel R. Heath -?Lexington, SC -----Original Message----- From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Sid Wood Sent: Sunday, January 26, 2014 12:34 PM To: krnet at list.krnet.org Subject: KR> Diehl Wing Skins & CG Not sure if there is some adverse CG consideration in using the Diehl wing skins on a KR-2 such as on my airplane. My KR-2 seemed to have that aft CG. I don't have any definitive data, but I have had to move my 2180 VW 2-inches forward from the plans location to get a more stable CG. Do the Diehl Wing Skins tend to move the design CG aft? Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA ---------------------------------------------------------------------- Gary Shubert wrote: > What is the going thought on wing and tail incidence angles? KR2 I am > going to use diehl wing skins and am planning to rebuild my tail with > the new airfoil coordinates. The tailfeathers would still follow the plans, which is zero degrees to the longeron, usually obtained with a 3/32" shim under the forward spar of the horizontal stab. Both the plans-built and "new airfoil" horizontal stabilizers are symmetrical airfoils, so the same incidence applies to either one. The only reason it's different with the "new airfoil" is because the wing airfoil templates are drawn with a little less incidence, so the tail gets a little less to match it. Even if you haven't installed the main wing yet, I'd still leave it stock incidence. Given my experience, which is you don't fly wide open at straight and level but a small percentage of the time, the improved view over the nose while landing is worth more than the tad of speed you might be giving up... Mark Langford ML at N56ML.com website at http://www.N56ML.com -------------------------------------------------------- _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
